Surface protection of titanium alloy plates mainly refers to coating protective coatings and lubricants on parts and sometimes molds. The purpose is to protect parts from oxidation, improve surface quality, extend mold life, and control the flow of materials during deformation. The coating should have the following properties: good corrosion resistance, no pollution to the titanium alloy plate material, and no harmful ingredients; a certain degree of adhesion, easy coating, a certain strength, not easy to damage the parts, and easy to remove and other characteristics. High-temperature coatings should also have high-temperature resistance and oxidation resistance, and form a uniform and dense coating at high temperatures.
When cold forming titanium alloy plates, conventional nitrocellulose varnishes, acrylic varnishes, etc. used for stamping can be used. Dry film lubricants, paint flakes C20 dissolved in trichloroethane, or polymethacrylic paints can also be used. High-temperature coatings commonly used during thermoforming include graphite suspension agent-colloidal graphite aqueous agent, glass protective lubricating coating, high-temperature paint and KBC series of high-temperature protective oils.
